1368025987 has 2 divisors, whose sum is σ = 1368025988. Its totient is φ = 1368025986.

The previous prime is 1368025969. The next prime is 1368026027. The reversal of 1368025987 is 7895208631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368025987 is a prime.

It is a super-2 number, since 2×1368025987² = 3742990202214648338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1368025987.

It is not a weakly prime, because it can be changed into another prime (1368025927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684012993 + 684012994.

It is an arithmetic number, because the mean of its divisors is an integer number (684012994).

Almost surely, 2^1368025987 is an apocalyptic number.

1368025987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368025987 is an equidigital number, since it uses as much as digits as its factorization.

1368025987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 1368025987 is about 36986.8353201514. The cubic root of 1368025987 is about 1110.1068498175.

The spelling of 1368025987 in words is "one billion, three hundred sixty-eight million, twenty-five thousand, nine hundred eighty-seven".